MTN take accountability for this mess

MTN sells your information to various debit collecting companies. I am not even sure if some of them are legit. Paid a company called Saya Recoveries last year and a few weeks later up to now we are being harassed on a daily basis by another company called MBD collecting the same outstanding amount. It certainly hasn’t helped sending them proof of payment and emails explaining three times since last year, the calls continue twice a day and MTN takes no accountability for this mess.